[PSUBS-MAILIST] DSV Aquatic update

[Jon Wallace via Personal_Submersibles]

Cliff,
I will probably add altitude as soon as I can find a sensor that will interact with the Raspberry.  Also not shown is air tank pressure which will be added.
I agree that not all data is as important as others.  Regarding the pitch and roll, I agree with your assessment on that as well.  The pitch and roll outputs are "free", calculated as part of the digital compass heading which is tilt compensated, so I added them in even though they are not very useful in this particular submarine application.  However, should I find myself in a night dive, stranded on the bottom, with the rear ballast tank blown off the stern, drunk, incoherent, and unable to ascertain spatial awareness; the data will come in handy so I can inform surface support that I am sitting on the bottom pitched up 45 degrees and need a lift bag attached to the stern.  :)  See...we can justify anything.


      From: Cliff Redus via Personal_Submersibles <personal_submersibles at psubs.org>
 To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
 Sent: Thursday, May 24, 2018 11:15 AM
 Subject: Re: [PSUBS-MAILIST] DSV Aquatic update
   
I see depth on your navigation HMI but not altitude.  Are you planning on adding this sensor?  Having run my boat for several years, I find that all data is not equally important.  What I find I check a lot are SOF of air tanks, SOC of batteries, depth, altitude, O2 and CO2 levels, and compass heading.  Other parameters I check less frequently.  Also you use an aircraft roll, pitch and compass heading style indictor which looks very nice.  Having said that, my experience is that K boats have a large spread between CB and CG.  As such my guess is that your indicator will not show much variation in pitch or roll under normal operating conditions but of course your heading will be active. 
Keep updates coming.  I enjoyed video.  Would be nice to have voice over as you walk through buttons and screens on HMI.
Best Regards
Cliff

   
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